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random32: Restore __latent_entropy attribute on net_rand_state 

[ Upstream commit 09a6b0bc3b ]

Commit f227e3ec3b ("random32: update the net random state on interrupt
and activity") broke compilation and was temporarily fixed by Linus in
83bdc7275e ("random32: remove net_rand_state from the latent entropy
gcc plugin") by entirely moving net_rand_state out of the things handled
by the latent_entropy GCC plugin.

From what I understand when reading the plugin code, using the
__latent_entropy attribute on a declaration was the wrong part and
simply keeping the __latent_entropy attribute on the variable definition
was the correct fix.

Fixes: 83bdc7275e ("random32: remove net_rand_state from the latent entropy gcc plugin")
Acked-by: Willy Tarreau <w@1wt.eu>
Cc: Emese Revfy <re.emese@gmail.com>
Signed-off-by: Thibaut Sautereau <thibaut.sautereau@ssi.gouv.fr>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5.4-rM2-2.2.x-imx-squashed
Thibaut Sautereau 2020-10-02 17:16:11 +02:00 committed by Greg Kroah-Hartman
parent 4faf2c3a97
commit 1d13c3a500
1 changed files with 1 additions and 1 deletions
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2
lib/random32.c
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@ -48,7 +48,7 @@ static inline void prandom_state_selftest(void)
}
#endif
DEFINE_PER_CPU(struct rnd_state, net_rand_state);
DEFINE_PER_CPU(struct rnd_state, net_rand_state) __latent_entropy;
/**
* prandom_u32_state - seeded pseudo-random number generator.